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Finding the Fourth Proportional to 441.78, 608.80 and 317.22

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Solution

The fourth proportional to 441.78, 608.80 and 317.22 is: 437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.78 : 608.80 = 317.22 : x
  2. Step 2: Convert to fraction form
    441.78/608.80 = 317.22/x
  3. Step 3: Cross multiply
    441.78x = 608.80 × 317.22
  4. Step 4: Simplify right side
    441.78x = 193,123.54
  5. Step 5: Solve for x
    x = 193,123.54/441.78
  6. Step 6: Final answer
    x = 437.15

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.